Hi Geekymom1,
While a solid surface platform can increase the chances of mold or mildew in a mattress in a humid environment (see post #10 here), with the air conditioning I think that the risk would be small enough that it wouldn’t prevent me from choosing an adjustable bed. Leaving your bed unmade for a few hours each day with the covers rolled back can also help to air out the mattress and reduce moisture and humidity levels. Other than that I would just check underneath the mattress from time to time just to confirm there are no signs of mold or mildew.
Phoenix